Solid-state imaging device and method for manufacturing the same

ABSTRACT

A solid-state imaging device comprises a housing in which a base and ribs forming a rectangular frame are formed in one piece by a resin; a plurality of metal lead pieces embedded in the housing, each of which has an internal terminal portion facing an internal space of the housing and an external terminal portion exposed at an outer portion of the housing; an imaging element arranged on the base in the internal space of the housing; connecting members connecting electrodes of the imaging element to the internal terminal portions of the metal lead pieces; and a transparent plate fastened to an upper face of the ribs. The upper face of the ribs is provided with a lower step portion that is lowered along an external periphery, and the transparent plate is fastened to the upper face of the ribs by an adhesive filled at least into the lower step portion. The joint between the ribs and the transparent plate has a cushioning effect with respect to stress caused by thermal deformation and the like, improving durability.

FIELD OF THE INVENTION

The present invention relates to solid-state imaging devices, in whichan imaging element such as a CCD or the like is mounted in a housing, aswell as to methods for manufacturing the same.

BACKGROUND OF THE INVENTION

Solid-state imaging devices, which are widely used for video cameras andstill cameras or the like, are provided in the form of a package, inwhich an imaging element, such as a CCD or the like, is mounted on abase made of an insulating material, with the photo-detecting regionbeing covered by a transparent plate. In order to make the device morecompact, the imaging element is mounted on the base as a bare chip. FIG.10 shows the solid-state imaging device disclosed in JP 2001-77277,which is a conventional example of such a solid-state imaging device.

In FIG. 10, numeral 41 denotes a housing, which is made of a base 41 aand frame-shaped ribs 41 b formed in one piece by resin molding. Aninternal space 42 is formed on the upper side of the housing 41. A diepad 43 positioned at the center of the base 41 a and leads 44 positionedbelow the ribs 41 b are embedded in the housing 41. An imaging elementchip 45 disposed at the center of the internal space 42 is fastened tothe upper side of the die pad 43. The leads 44 include internal terminalportions 44 a that are exposed to the internal space 42 at the upperside of the base 41 a on the internal side of the ribs 41 b and externalterminal portions 44 b that are accessible from the bottom side of thebase 41 a below the ribs 41 b. The internal terminal portions 44 a andthe bonding pads of the imaging element chip 45 are connected by bondingwires 46 made of metal. A transparent sealing glass plate 47 is fastenedto the upper surface of the ribs 41 b, thus forming a package forprotection of the imaging element chip 45.

This solid-state imaging device is mounted on a circuit board with thesealing glass plate 47 facing upward, as shown in FIG. 10, and theexternal terminal portions 44 b are used to connect it to the electrodeson the circuit board. Although not shown in the drawings, a lens barrelincorporating an imaging optical system whose relative position to thephoto-detecting region formed in the imaging element chip 45 is adjustedwith a predetermined precision is mounted on top of the sealing glassplate 47. During the imaging operation, object light that has passedthrough the imaging optical system incorporated in the lens barrel isfocused on the photo-detecting region and photoelectrically converted.

A solid-state imaging device with such a configuration is connected bythe external terminal portions 44 b exposed at the bottom surface of thehousing to electrodes on the circuit board, so that the height and theoccupied surface area of the package are smaller than in configurationsusing a connection with outer leads bent downward from the sides of thehousing, thus making it suitable for high-density packaging.

In the technology disclosed in JP 2001-77277A, an upper mold 48 and alower mold 49 as shown in FIG. 11 are used to resin mold the housing 41of the shape shown in FIG. 10. The upper side of the lower mold 49 isflat. The lower side of the upper mold 48 is provided with recessedportions 48 a corresponding to the ribs 41 b. An internal protrudingportion 48 b forming the internal space 42 and external protrudingportions 48 c forming the external surface of the ribs 41 b are providedto both sides of the recessed portions 48 a. The leads 44 and the diepad 43 are supplied in integrated form as a lead frame 50, and aredisposed between the upper mold 48 and the lower mold 49.

By interposing the lead frame 50 between the upper mold 48 and the lowermold 49, a cavity 51 for molding the base 41 a is formed between thelower mold 49 and the internal protruding portion 48 b of the upper mold48. Under these conditions, a resin is filled in, the mold is opened andthe molded product is retrieved, with the base 41 a and the ribs 41 bforming the housing 41 having their finished form. After the molding,the lead frame 50 is cut at locations positioned at the external side ofthe ribs 41 b.

In the conventional solid-state imaging device described above, thesealing glass plate 47 is joined onto the upper face of the rib 41 b byonly a small amount of adhesive interposed between them. Because thearea of the upper face of the rib 41 b is small, the joining strength isweak. Furthermore, because the layer of adhesive is thin, when stresscaused by thermal deformation occurs between the sealing glass plate 47and the ribs 41 b, cushioning of the distortions by the adhesive layeris small and the durability of the joint between the two is low.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a solid-stateimaging device having a joint between a rib and a transparent plateplaced on an upper face of the rib, which has high durability withrespect to stress occurring between the members caused by thermaldeformation and the like.

Furthermore, it is an object of the present invention to provide amethod for manufacturing a solid-state imaging device that is suitablefor mass production, by applying such a structure to a solid-stateimaging device without making the manufacturing process complex.

A solid-state imaging device according to the present inventionincludes: a housing in which a base and ribs forming a rectangular frameare formed in one piece by a resin; a plurality of metal lead piecesembedded in the housing, each of which has an internal terminal portionfacing an internal space of the housing, and an external terminalportion exposed at an outer portion of the housing; an imaging elementarranged on the base in the internal space of the housing; connectingmembers connecting electrodes of the imaging element to the internalterminal portions of the metal lead pieces; and a transparent platefastened to an upper face of the ribs. The upper face of the ribs isprovided with a lower step portion that is lowered along an externalperiphery; and the transparent plate is fastened to the upper face ofthe ribs by an adhesive filled at least into the lower step portion.

A method for manufacturing a solid-state imaging device according to thepresent invention includes: resin-molding a housing including a base andrectangular frame-shaped ribs in one piece with a plurality of metallead pieces, forming internal terminal portions and external terminalportions with the metal lead pieces; fixing an imaging element onto thebase inside an internal space of the housing; connecting electrodes ofthe imaging element respectively to the inner terminal portions of themetal lead pieces; and fixing a transparent plate to an upper face ofthe ribs. A plurality of the housings are molded together with aplurality of the metal lead pieces being arranged respectively, so thatrib forming members are formed with the ribs for forming adjacenthousings combined into a single rib, and a groove portion is provided onthe upper face of the rib forming members in the center in the widthdirection so as to extend in a longitudinal direction. After the imagingelement is arranged inside the internal space of each housing, theelectrodes of the imaging element are connected to the internal terminalportions with connecting members. Then, after an adhesive is provided ona top face of the rib forming members including the groove, atransparent plate is placed on and joined to the adhesive on the upperface of the rib forming members. Then, each housing is cut inside thegroove in a direction that is perpendicular to the base and divides awidth of the rib forming members into two, separating the solid-stateimaging devices into individual pieces.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a cross-sectional view showing a configuration of asolid-state imaging device in accordance with Embodiment 1 of thepresent invention.

FIG. 2 is a bottom view of the solid-state imaging device of FIG. 1.

FIG. 3 is a lateral view of the solid-state imaging device of FIG. 1.

FIG. 4 is a top view of the solid-state imaging device in FIG. 1 withoutthe transparent plate 7.

FIGS. 5A to 5F are cross-sectional views illustrating a method formanufacturing a solid-state imaging device according to Embodiment 2 ofthe present invention.

FIG. 6 is a top view of the lead frame in this manufacturing method.

FIG. 7 is a top view of the molded resin product in which the lead frameis embedded in this manufacturing method.

FIGS. 8A to 8C are cross-sectional views showing the resin molding stepof this manufacturing method in more detail.

FIGS. 9A to 9C are cross-sectional views illustrating a method formanufacturing a solid-state imaging device according to Embodiment 3 ofthe present invention.

FIG. 10 is a cross-sectional view of a conventional solid-state imagingdevice.

FIG. 11 is a cross-sectional view showing the step of molding thehousing of this solid-state imaging device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

According to the configuration of a solid-state imaging device of thepresent invention, the upper face of the ribs forming the housing isprovided with a lower step portion, which is lowered along the externalperiphery, and this lower step portion is filled with an adhesive. Thus,the adhesive for fastening the transparent plate to the upper face ofthe ribs has a sufficiently large volume. Consequently, when stresscaused by thermal deformation acts between the ribs and the transparentplate, the adhesive of the lower step portion relieves the distortions,and the strength with respect to stress is improved.

It is preferable that a thickness of the metal lead pieces at theposition of the internal terminal portion is substantially the same as athickness of the base, and the external terminal portions are formed ona rear face corresponding to the position of the internal terminalportions. It is also preferable that an outer lateral face of the ribsforms a plane that is substantially perpendicular to a surface of thebase, and an end face of the transparent plate is formed substantiallyflush to the outer lateral face of the ribs.

According to the method for manufacturing solid-state imaging devices ofthe present invention, it is easy fabricate a structure in which thelower step portion is filled with adhesive, without increasing processcomplexity.

It is preferable that a lead frame is used that is formed such that itincludes a plurality of lead portions for forming the plurality of leadpieces, and that its thickness at a position corresponding to theinternal terminal portions of the lead portions is substantially thesame as a thickness of the base, and the lead frame is mounted such thata portion corresponding to the inner terminal portions of the leadportions is clamped between a lower resin molding die and a portion ofan upper resin molding die forming the inner space of the housing, thusresin molding the housing.

It is also possible that a transparent plate of a size covering aplurality of housings is placed onto the upper face of the rib formingmembers when fastening the transparent plate, and the transparent plateis cut together when cutting the rib forming members into individualhousings.

It is also possible that, when fastening the transparent plate,individual transparent plates are placed on the respective housings suchthat gaps are formed between edges of adjacent transparent plates abovethe grooves in the rib forming members, and the solid-state imaginedevices are separated in the gap region.

Embodiments of the present invention are explained more specificallybelow with reference to the drawings.

Embodiment 1

FIG. 1 shows a cross-sectional view, FIG. 2 is a bottom view, and FIG. 3is a lateral view of the solid-state imaging device of the Embodiment 1.

Numeral 1 denotes a housing made of a plastic resin, such as epoxyresin, having rectangular frame-shaped ribs 3 arranged on a plane-shapedbase 2, which is fabricated by molding in one piece. An imaging element5 is fastened with an adhesive 6 to the base 2, facing an internal space4 of the housing 1. A transparent plate 7 made of glass, for example, isjoined with an adhesive 8 to the upper face of the ribs 3, thus sealingthe internal space 4 of the housing 1 and forming a package. The heightof the ribs 3 is set in a range of 0.3 to 1.0 mm, for example. A lowerstep portion 3 a, which is lowered along the external periphery, isformed on the upper face of the ribs 3, and the adhesive 8 filled ontothe lower step portion 3 a forms a relatively thick layer. In practice,it is preferable that the step difference between the top end face ofthe ribs 3 and the lower step portion 3 a is 0.05 to 0.5 mm.

A plurality of metal lead pieces 9 are embedded in the housing 1 duringmolding. The metal lead pieces 9 are members for providing electricalleads from the internal space 4 of the housing 1 to the outside, andinclude an internal terminal portion 9 a exposed at the surface of thebase 2 on the side of the internal space 4, an external terminal portion9 b exposed at a position corresponding to the internal terminal portion9 a at the rear surface of the base 2, and a lateral electrode portion 9c exposed at the outer lateral surface of the base 2. The pad electrodes5 a of the imaging element 5 and the internal terminal portions 9 a ofthe metal lead pieces 9 are connected by thin metal wires 10. Thethickness of the overall package is set to not more than 2.0 mm, forexample. FIG. 4 is a top view of the planar shape of the solid-stateimaging device in FIG. 1 without the transparent plate 7.

In this solid-state imaging device, by forming the lower step portion 3a on the upper face of the of the ribs 3, the volume of the adhesive 8on the lower step portion 3 a can be maintained in a sufficient amount.Thus, when stress is caused by thermal deformation or the like betweenthe transparent plate 7 and the ribs 3, the adhesive 8 on the lower stepportion 3 a cushions the distortion, and the strength with respect tostress is improved.

As shown in FIG. 1, the rear side corresponding to the positions of theinternal terminal portions 9 a of the metal lead pieces 9 forms theexternal terminal portions 9 b. Moreover, at these portions, the metallead pieces 9 have substantially the same thickness as the base 2.Consequently, during the resin molding, it is possible to clamp theinternal terminal portions 9 a and the external terminal portions 9 bwith the upper and lower molds. Thus, the surface of the internalterminal portions 9 a is pressed down by the surface of the upper moldand is in close contact therewith, so that the generation of resin burrscan be suppressed. Those portions of the metal lead pieces 9 that arelocated below the ribs 3 are formed thin by half-etching, and theirbottom surface is covered by resin.

As shown in FIGS. 1 and 3, the outer lateral side of the housing 1, thatis, the outer peripheral surface of the ribs 3, forms a planar surfacethat is substantially perpendicular to the surface of the base 2.Moreover, the end surface of the transparent plate 7 and the surface ofthe lateral electrode portions 9 c are substantially flush with theouter lateral surface of the housing 1. Such a flush shape can be formedwith a favorable flatness by cutting the ribs 3 and the transparentplate 7 together during the manufacturing process.

Embodiment 2

A method for manufacturing a solid-state imaging device according to theEmbodiment 2 is explained with reference to FIGS. 5A to F and FIGS. 6and 7. This manufacturing method is for manufacturing a solid-stateimaging device having the structure shown in Embodiment 1.

First, as shown in FIG. 5A, a lead frame 21 is prepared. As shown in thetop view of FIG. 6, the lead frame 21 is a frame in which a plurality oflead portions 22 are linked in order to form the metal lead pieces 9shown in FIG. 1. The thickness at the position corresponding to theinternal terminal portions 9 a of the lead portions 22 is setsubstantially identical to the thickness of the base 2. The leadportions 22 have recessed portions 23 formed in their bottom surface byhalf-etching, and the shape of the metal lead pieces 9 shown in FIG. 1is attained by cutting at this portion in a later process step.

Next, the lead frame 21 is embedded, as shown in FIG. 5B, so that aresin molded product including a plurality of housings 26 made of bases24 and ribs 25 is formed in one piece. FIG. 7 shows the planar shapeafter the molding. The embedding is performed such that the upper andlower surfaces of the lead portions 22 are exposed at the upper andlower surface of the base 24, forming the internal terminal portions 9 aand the external terminal portions 9 b. The rib forming members 25 havea shape obtained by combining the ribs of adjacent housings 26 into one.A groove portion 25 a is provided on the upper face of the rib formingmembers 25, arranged at the center in the width direction and extendingin the longitudinal direction. The wall of the groove portion 25 a couldbe inclined. Also, the bottom of the groove portion 25 a could be ashape other than flat.

Next, as shown in FIG. 5C, the imaging element 5 is fastened by theadhesive 6 in the internal space of the housings 26 which is enclosed bythe rib forming members 25, and the pad electrodes 5 a of the imagingelement 5 and the internal terminal portions 9 a are connected by thethin metal wires 10. Furthermore, an adhesive 28 is coated on the upperface of the rib forming members 25, with the groove portion 25 a at thecenter. The amount of adhesive that is applied is slightly more than theamount necessary to fill the groove portion 25, and is set such that anappropriate thickness of adhesive 28 is interposed between the end faceson both sides of the groove portion 25 a and the transparent plate 27when the transparent plate 27 is mounted, as explained later.

Next, as shown in FIG. 5D, the transparent plate 27 is placed on andfastened to the upper face of the rib forming members 25 to which theadhesive 28 has been applied.

Next, as shown in FIG. 5E, the transparent plate 27, the rib formingmember 25, the lead portion 22 and the base 24 are cut with a dicingblade 29, and separated into individual pieces forming the solid-stateimaging devices as shown in FIG. 5F. As shown in FIG. 5E, cutting isperformed in the groove portion 25 a in a direction perpendicular to thebase 24, and in the direction dividing the width of the rib formingmembers 25 into two when viewed from above. As a result, the housing 1made of the transparent plate 7, the base 2 and the rib 3 thatconstitute a single solid-state imaging device, and the metal leadpieces 9, are formed by the divided transparent plate 27, the ribforming members 25, the lead portions 22 and the base 24. The lower stepportion 3 a remains on the upper face of the ribs 3. Furthermore, thelateral electrode portion 9 c of the metal lead piece 9 is exposed.

According to the manufacturing method of the present embodiment, it iseasy to make a structure in which the lower step portion 3 a is filledwith the adhesive 28 without making the process complex. Furthermore,the volume of resin in the rib forming members 25 is reduced by formingthe groove portion 25 a, thereby reducing thermal contraction andexpansion.

The single rib forming member 25, which is formed by combining the tworibs of adjacent housings 26, can be set to a width less than twice thewidth of a single rib formed individually. Consequently, if it is cut inhalf as shown in FIG. 5E, the width of the ribs 3 of the individualsolid-state imaging devices shown in FIG. 5F is less than that of asingle rib molded individually, and the area of the solid-state imagingdevice can be reduced by this amount.

Even in this case, the width of the rib forming members 25 can bemaintained in a sufficient range to coat the adhesive for joining thetransparent plate 27. In the most extreme case, if the rib formingmembers 25 are molded with the same width as the individually formedribs and then cut into two pieces, then after cutting it is possible toprovide a width of the ribs 3 half that of conventional ribs.

Moreover, when cutting the ribs 25 in two pieces in the width direction,the cutting plane is perpendicular to the substrate portion 24. Bycontrast, if the ribs are formed individually as in the conventionalart, then a taper for breaking the device from the mold after moldinghas to be provided on the outer lateral surface of the ribs.Consequently, the width of ribs that are fabricated in accordance withthe present invention is reduced by the amount saved by not providingthe taper portion.

Furthermore, since the transparent plate 27, rib forming member 25 andthe lead portions 22 are cut together with the same dicing blade 29, thelateral surface of the package, which is formed by the end face of thetransparent cover 27, the lateral surface of the casing 1, and the endsurface of the metal lead pieces 9, is substantially flush, and afavorable degree of flatness can be attained. Consequently, whenmounting the device in the lens barrel accommodating the optical system,positioning of the optical system with respect to the photodetectingportion of the imaging element 5 can be performed with high precisionutilizing the lateral face of the package. That is to say, the deviceeasily can be positioned with regard to the horizontal position byabutting the lateral surface of the package against the inner surface ofthe lens barrel. It should be noted that the positioning in the verticaldirection can be performed by abutting the lower surface of the lensbarrel against the circuit board surface.

Referring to FIGS. 8A to 8C, the following is a more specificexplanation of the process step for molding the housing with a resin, asshown in FIG. 5B of the above-described manufacturing process.

First, as shown in FIG. 8A, a lead frame is interposed between the uppermold 30 and the lower mold 31, and the upper and lower surfaces of thelead portions 22 are clamped by the upper mold 30 and the lower mold 31.The upper surface of the lower mold 31 is flat, but a recessed portion32 for the purpose of forming the rib forming members 25 is provided onthe lower surface of the upper mold 30. In the base surface of therecessed portion 32, a protruding portion 30 a is provided for thepurpose of molding the groove portion 25 a. By interposing the leadportions 22, a space 33 formed between the upper mold 30 and the lowermold 31, a space of the recessed portion 32 of the upper mold 30, and aspace of the recessed portion 23 of the lead portions 22 form thecavities for the resin molding.

Next, as shown in FIG. 8B, a resin is filled into the cavity, and thebase 24 and the rib forming members 25 are molded. After that, the diesare opened as shown in FIG. 8C, and a molded product of linked housingsas shown in FIG. 5B is retrieved.

It should be noted that it is also possible to form the groove portion25 a by arranging a mold ejector pin in the same place, and with thesame size and dimensions as the protruding portion 30 a, instead offorming the protruding portion 30 a in the base surface of the recessedportion 32.

Furthermore, in the process described above, the upper and lowersurfaces of the lead portions 22 are clamped by the upper mold 30 andthe lower mold 31, ensuring that the die surfaces and the upper andlower surfaces of the lead portions 22 are consistently in closecontact. Moreover, the border between the upper mold 30 and the recessedportion 32 is located above the lead portions 22. As a result, thecreation of resin burrs caused by the molding can be suppressedeffectively.

Furthermore, generation of burrs can be controlled even more effectivelyif a resin sheet for suppressing resin flash burrs during resin moldingof the housing is interposed between the dies and the lead frame 21.

Embodiment 3

The method for manufacturing solid-state imaging devices according tothe Embodiment 3 is explained with reference to FIG. 9. Thismanufacturing method is largely the same as the manufacturing methodaccording to Embodiment 2, but differs from Embodiment 2 in that for thetransparent plate, individually mounted transparent plates are usedinstead of a transparent plate with a large surface area spanning theregion of a plurality of solid-state imaging devices. The first part ofthe process is the same as that shown in FIGS. 5A to 5C, so that furtherexplanations thereof are omitted.

First, as shown in FIG. 9A, an adhesive 28 is coated onto the upper faceof the rib forming members 25, with the groove portion 25 a at thecenter, after fastening the imaging elements 5 and completing theirconnection with the thin metal wires 10 inside the internal space of thehousings 26 enclosed by the rib forming members 25.

Next, the transparent plates are mounted onto respective housings asshown in FIG. 9B. The peripheral edges of adjacent transparent plates 34are set to a size to form a predetermined gap within the groove portion25 a of the upper face of the rib forming members 25. Consequently, bymounting the transparent plates 34 on the adhesive 28, a fillet 35 isformed by the adhesive 28 entering the gap between the transparentplates 34.

Next, as shown in FIG. 9C, the fillet 35, the rib forming members 25,the lead portion 22 and the base 24 are cut with the dicing blade 29,and separated into pieces forming the solid-state imaging devices.Similarly to Embodiment 2, cutting is performed in the groove portion 25a, in a direction perpendicular to the base 24, such that the width ofthe rib forming members 25 is divided into two when viewed from above.As a result, the housing 1 made of the base 2 and the ribs 3, whichconstitute individual solid-state imaging devices, and the metal leadpieces 9, are formed by the cut rib forming members 25, the leadportions 22 and the base 24. A fillet 36 remains at the peripheral edgeof the transparent plate 34.

With this manufacturing method, fillets 36 are formed at the peripheraledge of the transparent plate 34 and the transparent plate 34 isfastened securely, even if the width of the ribs 25 is not sufficientlylarge.

The invention may be embodied in other forms without departing from thespirit or essential characteristics thereof. The embodiments disclosedin this application are to be considered in all respects as illustrativeand not limiting. The scope of the invention is indicated by theappended claims rather than by the foregoing description, and allchanges which come within the meaning and range of equivalency of theclaims are intended to be embraced therein.

1. A solid-state imaging device comprising: a housing in which a baseand ribs forming a rectangular frame are formed in one piece by a resin;a plurality of metal lead pieces embedded in the housing, each of whichhas an internal terminal portion facing an internal space of thehousing, and an external terminal portion exposed at an outer portion ofthe housing; an imaging element arranged on the base in the internalspace of the housing; connecting members connecting electrodes of theimaging element to the internal terminal portions of the metal leadpieces; and a transparent plate fastened to an upper face of the ribs,wherein the upper face of the ribs is provided with a lower step portionthat is lowered along an external periphery; and the transparent plateis fastened to the upper face of the ribs by an adhesive filled at leastinto the lower step portion.
 2. The solid-state imaging device accordingto claim 1, wherein a thickness of the metal lead pieces at the positionof the internal terminal portion is substantially the same as athickness of the base, and the external terminal portions are formed ona rear face corresponding to the position of the internal terminalportions.
 3. The solid-state imaging device according to claim 1,wherein an outer lateral face of the ribs forms a plane that issubstantially perpendicular to a surface of the base, and an end face ofthe transparent plate is formed substantially flush with the outerlateral face of the ribs.
 4. A method for manufacturing a solid-stateimaging device, comprising: resin-molding a housing including a base andrectangular frame-shaped ribs in one piece with a plurality of metallead pieces, forming internal terminal portions and external terminalportions with the metal lead pieces; fixing an imaging element onto thebase inside an internal space of the housing; connecting electrodes ofthe imaging element respectively to the inner terminal portions of themetal lead pieces; and fixing a transparent plate to an upper face ofthe ribs, wherein a plurality of the housings are molded together with aplurality of the metal lead pieces being arranged respectively, so thatrib forming members are formed with the ribs for forming adjacenthousings combined into a single rib, and a groove portion is provided onthe upper face of the rib forming members in the center in the widthdirection so as to extend in a longitudinal direction, after the imagingelement is arranged inside the internal space of each housing, theelectrodes of the imaging element are connected to the internal terminalportions with connecting members, then, after an adhesive is provided ona top face of the rib forming members including the groove, atransparent plate is placed on and joined to the adhesive on the upperface of the rib forming members, and then, each housing is cut insidethe groove in a direction which is perpendicular to the base and whichdivides a width of the rib forming members into two, separating thesolid-state imaging devices into individual pieces.
 5. The method formanufacturing a solid-state imaging device according to claim 4, whereina lead frame is used that is formed such that it includes a plurality oflead portions for forming the plurality of lead pieces, and that itsthickness at a position corresponding to the internal terminal portionsof the lead portions is substantially the same as a thickness of thebase, and the lead frame is mounted such that a portion corresponding tothe inner terminal portions of the lead portions is clamped between alower resin molding die and a portion of an upper resin molding dieforming the inner space of the housing, thus resin molding the housing.6. The method for manufacturing a solid-state imaging device accordingto claim 4, wherein a transparent plate of a size covering a pluralityof housings is placed onto the upper face of the rib forming memberswhen fastening the transparent plate, and the transparent plate is cuttogether when cutting the rib forming members into individual housings.7. The method for manufacturing a solid-state imaging device accordingto claim 4, wherein, when fastening the transparent plate, individualtransparent plates are placed on the respective housings such that gapsare formed between edges of adjacent transparent plates above thegrooves in the rib forming members, and the solid-state imagine devicesare separated in the gap region.